Improvement in carbureters



J. M. POLLARD.

Ga'rbureter.

Patented Oct. 19, 1825.

N FEIERS, PHOTO-LITHDGRAPHER. WASHINGTQN, D. CA

TTED STATES PATENT :OFFICIEL` JAMES POLLARD, OF NEW ORLEANS, LOUISIANA,ASSIGNOR TO HIMSELF y AND WALLAOEW. BARTON, OF GALVESTON, TEXAS.

IMPROVEMENT IN CARBURETERS.

Specification forming part of Letters Patent No. 169,034, dated October19, 1875; application led .July 24, 1675.

Tocll whom it may concern:

Be it known that I, JAMES M. POLLARD, of New Orleans, in the parish ofOrleans and State of Louisiana, have invented a new and usefulImprovement in Carbureter, of which the following is a specification:

The figure is a vertical section of my improved carbureter.

The object of this invention is to furnish an improved apparatus forenriching illuminating-gas with the vapor of gasoline or other lighthydrocarbon, so as to greatly increase its effectiveness, and whichshall be simple in construction, and convenient, effective, and safe inuse.

The invention will first be described in connection with drawing, andthen pointed out in the claim.

A represents the outer case of the apparatus, the walls of which Ipropose to make double, and with the intermediate space filled withcrushed asbestus. B is a low open-topped vessel of a less diameter thanthe case A, and which is provided with legs b to support it at a littledistance above the bottom of thel case A. C is the gasoline-holder,which isv made of a little less diameter than the vessel B, and which issupported at a little distance above the bottom of the vessel B by theperforated ilanges D E attached to its bottom, and the lower edges ofwhich rest upon the bottom of the vessel B. The perforated flange D issecured to the bottom of the vessel O at or near its edge, and theperforated ilange E is secured to the bottom of the vessel O around andat a little distance from its center, so as to be concentric with thesaid flange-D. The vessels B C may be further connected together byhooks F upon their outer sides. The space between the perforated flangesD E is filled with crushed asbestus G, or other suitable ma terial, butasbestus is preferred as being wholly unaffected by the oil and gas. Hisa small pipe open at both ends, the upper end of which is secured in ahole in the center of the bottom of the gasoline-holder C, and the lowerend of which extends nearly to the bottom ofthe vessel B. I is a smallpipe open at both ends, the upper end of which is secured in a hole inthe center of the bottom of the vessel B, and

the lower end of which extends nearly to the bottom of the case A. J isa small pipe leadin gin through the top of the case A and through kthetop of the vessel C for convenience in putting in the gasoline, andwhich is closed with a stop-cock. K is the gas-pipefrom which theinlet-pipe L passes down through the top of the case A, passes downalong the side of the vessel O through the space between the sides ofthe vessels C B, or through an enlargement of said space formed toreceive it, passes in through the perforated iianges D E, and dischargesthe gas into the space within the perforated flange E. M is theoutlet-pipe, which passes from the spacel between the tops of the vesselG and case A, through thc top of the said case A, and leads into thegas-pipe K. The gas-pipe K, between the pipes L M, is supplied with astop-cock, N, and the said pipe K, between the stop-cock N and theoutlet-pipe M, is lled with crushed asbestus O. The gaspipe K, beyondthe pipe L, is designed to beA provided with a valve to prevent anybackilow of the gas. The vessel (l is designed to be supplied withgasoline from a can provided with a single opening, in which is secureda short pipeprovided with a stop-cock, and with a coupling forconnecting it with the supply-pipe J of the apparatus.

In supplying the vessel C with gasoline the pipe of the can is coupledwith the pipe J, and both the stop-cocks are opened, allowing thegasoline to ow into the said vessel C. The gasoline from the Vessel Oflows down through the pipe H into the bottom of the vessel B, saturatesthe asbestus G, and rises above the bottom of said vessel B, until themouth of the pipe H is covered, as indicated by the line P, whichprevents any further escape of air, and any further downiow of gasolineexcept to supply the loss of that taken up by the gas as it passesthrough the asbestus G. The lower part of the case A is filled withwater up to about the line Q, which covers the lower end of the pipe Iand prevents the outlow of the gasoline through the pipe I, the gasolineand water meeting in the pipe I at about the point B, owing to thedifference of gravity between the two fluids. This construction allowsany water of condensation to escape through the pipe I. The case Ashould be provided with an overflow-pipe, (which is not shown in thedrawings.) As the gas escapes from the pipe L it passes through theasbestus Gr, becomes saturated with the vapors of gasoline, passes upthrough the space between the walls of the vessels B C, through thespace between the walls of the vessel C and case A, through the pipe Minto the pipe K, and thence to the burners. The richness of the gas maybe regulated by adjusting the cock N to allow any desired proportion ofthe gas to pass to the burners without passing through the carbureter.The packing O opposes to the gas that is passing through the pipe K thesame resistance that the carbureter does to the gas that is passingthrough it, so that the desired proportions may be maintained under allcircum-`

